noaa-lake-13074 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2024-04-03 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Lone Spruce Pond, Alaska 14,500 Year Multiproxy Sediment Data 2012-06-30 publication doi:10.25921/nyeg-9282 noaa-lake-13074 NCEI DSI 1200_02 NCEI DSI 1200_01 Kaufman, D.S. originator Kaufman, D.S. author Axford, Y. originator Axford, Y. author Anderson, R.S. originator Anderson, R.S. author Lamoureux, S.F. originator Lamoureux, S.F. author Schindler, D.E. originator Schindler, D.E. author Walker, I.R. originator Walker, I.R. author Werner, A. originator Werner, A. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of Alaska, United States Of America. The time period coverage is from 14524 to -5 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-lake.png Paleoclimatology - Lake PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > pollen earth science > paleoclimate > pollen earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > pollen earth science > paleoclimate > pollen earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > insect|paleolimnology earth science > paleoclimate > paleolimnology > magnetic susceptibility earth science > paleoclimate > paleolimnology > physical properties earth science > paleoclimate > paleolimnology > population abundance earth science > paleoclimate > paleolimnology > mineralogy earth science > paleoclimate > paleolimnology > oxygen isotopes earth science > paleoclimate > paleolimnology > carbon isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Arctic PAGES Arctic 2k Younger Dryas theme What: clay; Material: sediment What: delta 15N; Material: sediment What: total head capsules; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: carbon; Material: sediment What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: depth; Material: null What: volume magnetic susceptibility; Material: sediment What: biogenic silica; Material: sediment What: delta 13C; Material: sediment What: identified midge; Material: null What: identified midge; Material: null What: age; Material: null What: depth; Material: null What: age; Material: null What: notes; Material: null What: identified midge; Material: null What: depth; Material: null What: organic matter; Material: sediment What: sand; Material: sediment What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: age; Material: null What: density; Material: sediment What: silt; Material: sediment What: nitrogen; Material: sediment What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: depth; Material: null What: depth; Material: null What: pollen; Material: null What: depth; Material: null What: grain size median; Material: sediment What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null What: identified midge; Material: null theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Continent > North America > United States Of America > Alaska > Lone Spruce Pond > LATITUDE 60.007 > LONGITUDE -159.143 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Kaufman, D.S.; Axford, Y.; Anderson, R.S.; Lamoureux, S.F.; Schindler, D.E.; Walker, I.R.; Werner, A. (2012-06-30): NOAA/WDS Paleoclimatology - Lone Spruce Pond, Alaska 14,500 Year Multiproxy Sediment Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/nyeg-9282. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. A multi-proxy record of the Last Glacial Maximum and last 14,500 years of paleoenvironmental change at Lone Spruce Pond, southwestern Alaska 2012 publication Kaufman, D.S., Y. Axford, R.S. Anderson, S.F. Lamoureux, D.E. Schindler, I.R. Walker, and A. Werner author Journal of Paleolimnology publisher https://doi.org/10.1007/s10933-012-9607-4 HTTPS Web Browser Associated Reference published 2012 Kaufman, D.S., Y. Axford, R.S. Anderson, S.F. Lamoureux, D.E. Schindler, I.R. Walker, and A. Werner, 2012: A multi-proxy record of the Last Glacial Maximum and last 14,500 years of paleoenvironmental change at Lone Spruce Pond, southwestern Alaska. Journal of Paleolimnology, 48, 9-26, 10.1007/s10933-012-9607-4 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 14524 cal yr BP to -5 cal yr BP; -159.143 -159.143 60.007 60.007 Study Coordinates 60.007 -159.143 -12574 1955 STUDY NOTES: Multiproxy sediment data from Lone Spruce Pond, Alaska, for the past 14,500 years. Paleoenvironmental proxies measured include abundance of organic matter, biogenic silica, carbon and nitrogen content and isotopic ratios, magnetic susceptibility, grain-size distribution of bulk sediment, abundance of alder shrub (Alnus) pollen, and midge (Chironomidae and Chaoboridae) assemblages. Lone Spruce Pond, Southwestern Alaska: 60.007°N, 159.143°W ABSTRACT SUPPLIED BY ORIGINATOR: Sediment cores from Lone Spruce Pond (60.007°N, 159.143°W), southwestern Alaska, record paleoenvironmental changes during the global Last Glacial Maximum (LGM), and during the last 14,500 calendar years BP (14.5 cal ka). We analyzed the abundance of organic matter, biogenic silica, carbon, and nitrogen, and the isotope ratios of C and N, magnetic susceptibility, and grain-size distribution of bulk sediment, abundance of alder shrub (Alnus) pollen, and midge (Chironomidae and Chaoboridae) assemblages in a 4.7-m-long sediment sequence from the depocenter at 22 m water depth. The basal unit contains macrofossils dating to 25-21 cal ka (the global LGM), and is interpreted as glacial-lacustrine sediment. The open water requires that the outlet of the Ahklun Mountain ice cap had retreated to within 6 km of the range crest. In addition to cladocerans and diatoms, the glacial-lacustrine mud contains chironomids consistent with deep, oligotrophic conditions; several taxa associated with relatively warm conditions are present, suggestive of relative warmth during the global LGM. The glacial-lacustrine unit is separated from the overlying non-glacial lake sediment by a possible disconformity, which might record a readvance of glacier ice. Non-glacial sediment began accumulating around 14.5 cal ka, with high flux of mineral matter and fluctuating physical and biological properties through the global deglacial period, including a reversal in biogenic-silica (BSi) content during the Younger Dryas (YD). During the global deglacial interval, the d13C values of lake sediment were higher relative to other periods, consistent with low C:N ratios (8), and suggesting a dominant atmospheric CO2 source of C for phytoplankton. Concentrations of aquatic faunal remains (chironomids and Cladocera) were low throughout the deglacial interval, diversity was low and warm-indicator taxa were absent. Higher production and air temperatures are inferred following the YD, when bulk organic-matter (OM) content (LOI 550 °C) increased substantially and permanently, from 10 to 30%, a trend paralleled by an increase in C and N abundance, an increase in C:N ratio (to about 12), and a decrease in d13C of sediment. Post-YD warming is marked by a rapid shift in the midge assemblage. Between 8.9 and 8.5 cal ka, Alnus pollen tripled (25-75 %), followed by the near-tripling of BSi (7-19 %) by 8.2 cal ka, and d15N began a steady rise, reflecting the buildup of N and an increase in denitrification in soils. Several chironomid taxa indicative of relatively warm conditions were present throughout the Holocene. Quantitative chironomid-based temperature inferences are complicated by the expansion of Alnus and resulting changes in lake nutrient status and production; these changes were associated with an abrupt increase in cladoceran abundance and persistent shift in the chironomid assemblage. During the last 2,000 years, chironomid-assemblage changes suggest cooler temperatures, and BSi and OM values were generally lower than their maximum Holocene values, with minima during the seventh and eighth centuries, and again during the eighteenth century. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/nyeg-9282 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/13074 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/lake HTTPS Information NCEI Lake Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/lonespruce2012.xls HTTPS Download NCEI Direct Download Direct download links for dataset files. download https://www.ncei.noaa.gov/pub/data/paleo/paleolimnology/northamerica/usa/alaska/lonespruce2012.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21